US PATENT SUBCLASS 123 / 666
.~.~ Hemispherical

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

657  DF  COMBUSTION CHAMBER {11}
664  DF  .~ Combustion chamber shape is a figure of revolution {2}
666.~.~ Hemispherical

DEFINITION

Classification: 123/666

Hemispherical:

(under subclass 664) Subject matter in which the figure of revolution is dome-shaped.